198528896513 has 4 divisors (see below), whose sum is σ = 198529940928. Its totient is φ = 198527852100.

The previous prime is 198528896459. The next prime is 198528896591. The reversal of 198528896513 is 315698825891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 315698825891 = 89 ⋅3547177819.

It is a cyclic number.

It is not a de Polignac number, because 198528896513 - 2¹⁴ = 198528880129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198528896513.

It is not an unprimeable number, because it can be changed into a prime (198528896213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147413 + ... + 647138.

It is an arithmetic number, because the mean of its divisors is an integer number (49632485232).

Almost surely, 2^198528896513 is an apocalyptic number.

It is an amenable number.

198528896513 is a deficient number, since it is larger than the sum of its proper divisors (1044415).

198528896513 is an equidigital number, since it uses as much as digits as its factorization.

198528896513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044414.

The product of its digits is 37324800, while the sum is 65.

The spelling of 198528896513 in words is "one hundred ninety-eight billion, five hundred twenty-eight million, eight hundred ninety-six thousand, five hundred thirteen".